Forging hammer



J.v B. HENRY FOBGING HAMMER Filed March 19, 332i; 2 Sheets-Sheai 1lNVENfoR WITNESSES.

Feb, 11. 1925i J. B. HENRY EORGING HAMMER Filed March 19. 1924 .,2Sheets-Sheet 2 .I INVENTOR 5. Mi

Patented Feb. 17, 1925.

y UNITED STATES JOHN BYRON` HENRY, 0F .ASPINVVALL7 PENNSYLVANIA. l

FORGING HAMMER.

Application led March 19, 1924. Serial No. 700,255.

To all 'whom it may concern.'

Be it known that I, JOHN BYRON HENRY, a citizen of the United States,and a resident of Aspinwall, in the county of Allegheny and State offPennsylvania, have invented a new and useful Improvement in ForgingHammers, of which the following is a specilication.

This invention relates to power hammers, and particularlyto steam forgehammers including a supporting trame, a hammer operating power cylinderprovided with a piston and piston rod carrying a ram or hammer attachedthereto.

Heretofore, it has been customary to pro vide composite frames for suchhammers, the several castings comprising the entire frame being fastenedtogether by means oi' bolts, tie rods, and similar connecting means,together with washers, spacing blocks and thimbles used in connectiontherewith. With the use of these `composite frames great difficulty hasbeen experienced not only in maintaining the several parts of the frameitsellin proper relative position to each other, but also in maintainingthe relative positions of the frame to the bed plate and anvil block atthe base of the forging hammer, as well as in respect to the powercylinder and its associated piston, piston rod and attached ramsurmounting the upper portion of the frame. Due to the nuw merous andever varying strains continually thrown upon the several parts, constantwear occurs between the abutting surfaces, the fastening devices tend togradually loosen, and the entire initial setting of the parts becomesdisarranged. Consequently, the necessary alignment assuring properworking Vof the movable `parts is destroyed, resulting in binding,excessive'friction and consumption of power, unsatisfactory forging bythe dies, and a continual enhance ment of the bending and distortion ofthe parts unless careful and repeated adjustments are made atcomparatively short intervals. Y

It is an object of this invention to overcome the disadvantages abovenoted'by providing a forging hammer in which the proper relativepositioning and alignment of the several parts may be maintained inservice without diiculty and in which the entire main frame is formed asa single integral piece, y

It isfalso an object to provide aframe of the character referred to soshaped as to facilita-te the Vmounting thereof upon the anvil block orother support and the mounting` of the power cylinder upon the trame.

It is still a further object to provide a single piece integral frame inwhich the shocks and vibrations from the anvil and power cylindertransmitted to the irame are reduced. to a minimum, which object isaccomplished in the embodiments illustrated by spacing the intermediateportions of the transverse apron members of the frame away from theanvil block and cylinder casting'.

These and other objects of the invention will more fully appear whentaken in conjunction with the following description and the appendedclaims.

In the Vaccomyiianying drawings, l is a front. elevational view of oneembodiment of the invention; Fig. 2 a side elevation of the forginghammer illustrated in Fig. l; Fig. 3 a horizontal transverse sectionalview i taken substantially on the line III- III of Fig. l; Figs. 4 and 5views corresponding to Figs. l and 2 illustrating a y. ,I modified formof the invention; and Fig.

6 a transverse sectional view taken on the vline VI-VI of Fig. 4.

per edges, as clearly shown in Fig. 2, thus vforming a bi'furcatedextremity which is adaptedto receive the base portion 8 of the powercylinder casting. The intermediate portion of the aprons 7, 7', disposedbeltween the legs 4, 4l', are spaced slightly awa-y it'romV the power`cylinder, thus strengthening the necessary connection 5 between thelegs while at the same time avoiding a large portion of the area ol suchconnecting means being brought into intimate contact with portions ofthe power cylinder casting.

The transverse 'connection between the which are Y `flared slightlyoutwardly towards their uplower ends of the upright legs is similarlyformed, and consists of the depending, flared aprons 9, 9, which areadapted to str-addio the anvil block `which is Vreceived 'within thebifurcation thus formed, while the intermediate portion of the apronsare spaced from the sides of the anvil block as clearly shown in Fig. 2.

The portions of the base of the power cylinder casting and those of theframe at the juncture of the aprons, as well as the abutting surfaceslbetween the anvil block and the frame, are suitably recessed andmachined so as to provide a close and neat fit. The frame is connectedto the anvil block by any suitable fastening means such as the framebolts indicated at 10 while the cylinder casting is likewise held to itsseat at the upper portion of the frame by means of the cylinder bolts11.

The upright legs el. and e are preferably H-shaped in cross-section, asshown in Fig. 3, and the inner sides thereof are equipped with suitableguides 12, 19. for guiding the ram 13 attached to the lower extremity ofthe piston rod 14 of the power cylinder in its reciprocating movement,these parts being constructed and operated in a well known manner.

By lforming` the entire ina-in frame 3 as a single 'integral piece orcasting, all dans ger of distortion thereof due to relative movementbetween its parts is eliminated, and afterfthe frame has been securelyconnected to the anvil block and power cylinder casting andproperlyaligned, the parts will remain in this condition indefinitely,thereby eliminatingl the necessity for the continual adjustment,aligning, and repositioning of the several parts as in many of thepreviously used forging hammers now upon the market.

The bi'ftir'cat'ed extremities of the frame formed by the separatedpairs of aprons, aid inthe ready assembly of the parts due to thevreception 'of the upper portion of the anvil block within the spacebetween the aprons 9, 9', and the power cylinder 2 is readily guided toits 'seat by means of the disposition of the aprons 7 and T. Althoughthe aprons perform this function as well -as providingan essential partof the necessary transverse connect-ions between the legs, because ofthe spaced relation between the intermediate portions of the aprons andthe anvil block and cylinder casting` very little vibration from theanvil block or cylinder is transmittedthrough these parts, consequentlylessening the objectionable strains land vibrations from these sourcesto a. minimum.

Figs. l to G illustrate a modified embodiment of the inventioncorresponding `more or less generally y to the so-called double frame'type of hammer. 1n this n'iodiiication the lower extremities oftheverse member 5'LL comprising the spaced ,Y

apart aprons la corresponding to the bifurcated upper extremity of theframe in the first described embodiment, and the power cylinder issimilarly supported in position thereon. rlhe remaining portions of thehammer correspond generally with tnose described in connection with theform of Figs. 1 to 3, and have been designated by the saine referencenumerals with the addition of an exponent a.

An opening 17 is provided in the base portion 15 at a point between thelower ends of the legs et through which the anvil block 1G entends, andin order to reduce the vibrations and shocks which are ordinarilyVtiansmitted from the anvil block to the remaining parts the opening 17is somewhat lgreater in size than the portion of the anvil blockdisposed within the opening whereby to provide a space therebetween.

The particular construction of the power cylinder. the mechanism foractuating thi` piston thereof, as well as the means for controlling thereciprocation of the ram. form no part of the present invention.ATherefore. these details of construction iave been purposely omittedfor the purpose of sin'u'ilifying the drawings and the description. Themode of actuating and controllingthe operation of the ram in itsreciprocation is well known to those familiar with the art, and isobvious from the drawings, without additional illustration.

lt is thus seen that the invention provides a simple, sturdy. andserviceable power forginghammer, in which the several partey will bemaintained during service in the proper relative positions withoutdanger of mis-alignment and the consequent undue stresses and bendingstrains incident thereto, one in which the construction of the mainframe facilitates the mounting of the frame upon its support as well astheipower cylinder upon the upper portion of the frame itself, and on@which when once properly installed will operate eliiciently with verylittle attention or cost of maintenance.

l claim: I

1. A rpower forging han'imer comprising a main frameI9 and a power'cylinder mounted thereon, said frame having legs ila connected by atransverse member forming a continuation of the said legs, saidtransverse member being bifurcated and constituting a pair of spacedapart aprons.

2. A power forging hammer comprising a support, a power cylinder, and asingle piece integral main frame interposed therebetween, the said frameconsisting of spaced upright legs connected at their opposite ends bytransverse members forming continuations of the said legs, one of thetransverse members being bifurcated and constituting a pair of spacedapart aprons.

3. A power forging hammer comprising a support, a power cylinder, and asingle piece integral main frame interposed therebetween, the saidlraxne consisting of spaced upright legs connected at their oppositeends by transverse members forming continuations of the said legs, oneof the transverse members being bifurcated and constituting a pair ofspaced apart aprons with said power cylinder disposed between theaprons, the intermediate portions of said aprons being spaced from thepowerV cylinder.

4. A power forging hammer comprising an anvil block, a' power cylinder,and a single piece integral frame interposed between the block andcylinder, said frame consisting of spaced upright legs connected attheir opposite extremities by pairs of spaced aprons formingcontinuations of the said legs, the intermediate portions of said pairsof aprons forming bifurcations at the lower and upper extremities o theframe between which are seated the anvil block and power' cylinder7respectively.

5. A power forging hammer comprising an anvil block7 a power cylinder,and a single piece integral frame interposed vbetween the block andcylinder, said frame consisting of spaced upright legs connected attheir opposite extremities by pairs of spaced aprons formingcontinuations of the said legs, the power cylinder being disposedbetween the aprons at the upper end of the frame, and the aprons at thelower end of the frame straddling the said anvil block with theirintermediate portions spaced therefrom.

In testimony whereof, I sign my name.

JOHN BYRON HENRY.

WVitness:

EDwrN O. JOHNS.

